When painting tefillin, are there any requirements regarding the ink (other than the need to be black)? Or is any ink okay to use?
Like in the comments to this answer, shoe polish is recommended. Is ...

Usually, the color white is associated with purity (as indicated by the kittle). I don't know if the opposite color in the spectrum represents the opposite of purity (yes, I know it's not technically ...

It is going to sound strange but here is the question In the toilet there are these blue things that clean your bathroom with every flush by adding bleach hence it colors the water blue every time you ...

Originally a red thread was tied to the outside of the door of the Ulam on Yom Kippur. If the thread went white, it symbolised that the people’s sins had been forgiven and vice versa. Later the thread ...

In the VaYetze weekly reading (Parasha) there is a long description of the colors of the sheep and goat: Akudim, Nekutim...
What is the reason behind all of this descriptions? If the text wanted to ...

We learn in Mishnah Megillah 4:8 that if someone insists on wearing only one color when they pray we do not let them be the "shliach tzibor" (prayer leader).
This is because we suspect he is involved ...

I know that during the 7 clean days of the nidda / tahara cycle, a woman has to wear white underwear. However, in extenuating circumstances (such as spotting for many weeks), is it ever permissible to ...

Besides for the minhag that one should not wear jewelry on Yom HaKipurim because of the "fear of the judgment" there is also the minhag to not wear gold (even as a decoration on a tallis or kittel) ...

Yarok ירוק in modern Hebrew means green. What color does it refer to in Mishnaic Hebrew? I have heard that it refers to yellow and not green because the Mishna in Sukkah (on 34b) discusses a citron ...

A friend of mine got me tzizit (on a small wool tallis) to wear every day under my shirt. It has dark blue stripes that show straight through my shirt. I wore a vest to cover it up but I'm wondering ...

I've heard a rumor floating around to the effect that Jews should not wear all black as an expression of mourning. Is there anything to that? If so, is there anything inherently wrong with it, is it a ...

I recently listened to this podcast from the OU Kashrut Division on the kashrut of Bowfin eggs in particular and of fish eggs in general, and I learned something interesting about the kashrut of fish ...

Is it permissible to suntan on Shabbos?
The possible prohibition would be tzoveah -- dyeing.
Is it considered permanent enough to be Biblically prohibited?
Is it dyeing at all being that no coloring ...

What halachot are affected if a person is colorblind? One probable example I can think of relates to the laws of niddah and checking emissions. Another less likely example would be the the halachic ...

http://en.wikipedia.org/wiki/Tyrian_purple and http://en.wikipedia.org/wiki/Iles_Purpuraires show that blue dye was produced from the murex in ancient times in these locations.
But on Ptil Tekhelet's ...

We see here and here questions about wearing a black hat. However, why is the hat black? Is there some sort of kedushah to wearing a black Stetson or Borsalino which is lost in other colours? Or is ...

Is there a problem with wearing tefillin whose paint has started to chip off? Would such a situation require one to get the tefillin repainted? Can someone still be yotzei by tefillin whose paint is ...

While the colors of the rainbow (or spectral colors) form a continuum, people have assigned them to finitely many pigeonholes for centuries and probably millennia. Apparently, Newton used seven colors ...

BS"D
Is there a Torah source for the Kallah Bride to wear only white? What about a second marriage? Does the white indicate that the bride and groom make the day before marriage a special attempt to ...

AFAIK the psak on a bedikah cloth depends on the colour of the stain. Any shade of red indicates nidda, other colours, including brown, are okay.
Doesn't blood turn from red to brown when it dries? ...

A cesem that is found on a colored piece of clothing is tahar. What about someone with dark skin (they are of some ethnicity/race that has darker skin), could the same idea be applied in such a case ...